Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
Consolidated Statements Of Operations [Abstract]
Net sales	$ 125,400	$ 122,530	$ 377,342	$ 345,581
Cost of goods sold	(96,684)	(92,862)	(293,073)	(263,300)
Gross margin	28,716	29,668	84,269	82,281
Selling, general and administrative	(19,443)	(18,709)	(57,433)	(56,691)
Litigation settlement costs	2,030	250	2,280	250
Operating income (loss)	11,303	11,209	29,116	25,840
Interest and other income	(60)	131	6	837
Interest expense	(9)	(54)	(69)	(89)
Income (loss) before income taxes	11,234	11,286	29,053	26,588
Income tax (provision) benefit	(4,290)	(4,330)	(10,980)	(10,070)
Net income (loss)	$ 6,944	$ 6,956	$ 18,073	$ 16,518
WEIGHTED AVERAGE NUMBER OF COMMON SHARES OUTSTANDING:
Basic	7,622	7,436	7,568	7,408
Diluted	7,836	7,702	7,771	7,681
EARNINGS (LOSS) PER SHARE OF COMMON STOCK:
Basic	$ 0.91	$ 0.94	$ 2.39	$ 2.23
Diluted	0.89	0.90	2.33	2.15
Cash dividends declared per common share	$ 0.18	$ 0.18	$ 0.54	$ 0.54